Chorionic villus sampling is a prenatal diagnostic test performed for prenatal genetic testing involving a biopsy of placental tissue between 10 to 13 weeks gestation.

A new study and more conservative federal guidelines may ease concern over the safety of chorionic villus sampling, the earliest prenatal test to detect fetal birth defects. After the test was link… ...

A small amount of chorionic villus tissue is removed for analysis. The second method is similar to amniocentesis, but with a sample taken of the placental tissue rather than of the amniotic fluid.

Chorionic-villus sampling, the current procedure of choice, allows an early diagnosis, but the miscarriage rate after chorionic-villus sampling is as high as 6.8 percent, ...

Developed by three separate California-based companies, the Harmony, MaterniT21 and Verifi are blood tests that analyze DNA fragments from the fetus that are passed on and circulated in a pregnant ...

The risks associated with chorionic villus sampling pose a dilemma for doctors who are learning procedure, writes Adam Wolfberg, M.D.

Testing for genetic defects early in pregnancy through chorionic villus sampling, or CVS, does not appear to raise the risk of fetal loss.

Chorionic villus sampling (CVS) is an antenatal test that is used to determine whether or not the foetus is carrying any chromosomal abnormalities, such as Down's syndrome. It is a very accurate ...